Control Engineering Company

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• Control Engineering Company

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• Presents

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• What is a Rating ?

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(No Transcript)
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• Ratings

• Provide a method of standardizing enclosures.

• Identify an enclosures resistance to
  environmental conditions.

• Help customers make safer, informed product
  selections.

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• Organizations that develop ratings.

• Canadian Standards Association (CSA)
• National Electrical Manufacturers Association
  (NEMA)
• International Electrotechnical Commission (IEC)
• National Fire Protection Association (NFPA)
• Joint Industrial Council (JIC)

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• Who are these organizations ?

• International Electrotechnial Commission

European based organization. Developed IP
Protection Classification System, IEC 529. The
system defines degrees of protection
against touch with a foreign body and protection
against water. The system is based on a two
digit code. Compliance to this system is
accomplished though testing and inspection.
Manufacturers using this system would install a
label with the IP Rating listed on it. Control
Engineering Company does not have any enclosures
tested to this rating system. IP - XX The
first X defines protection against touch with
foreign body. The second X
defines protection against water.
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• IP Rating System

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National Fire Protection Association
The National Fire Protection Association produced
the NFPA 79 Electrical Standards for Industrial
Machinery. In June of 1981, the Joint Industrial
Council (JIC) requested that NFPA
incorporate into its standards, topics covered
under JIC Standards with the intention that the
JIC Standards would eventually be
declared superseded. NFPA provides guidelines
for enclosures being mounted to, or installed on,
industrial machines and equipment. Manufacturers
using this system do not need to test their
enclosures, compliance is left up to the
manufacturer to determine. There is no label for
this system. Control Engineering Enclosures are
manufactured to comply with these standards.
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Canadian Standards Association
The Canadian Standards Association is based in
Toronto, Canada. Though primarily a Canadian only
organization, CSA has recently made itself
available in most of North America, partially due
to the NAFTA treaty. CSA has developed a set of
standards for enclosures very similar to NEMA and
UL. CSA has facilities to test enclosures to
see if they comply with their published
standards. CSA also has field inspectors that
regularly inspect manufacturers that use the CSA
label to verify that they do indeed comply with
the standards they have been tested to.
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National Electrical Manufacturers Association
The National Electrical Manufacturers Association
is an organization of companies that service
electrical\electronics markets. This
organization has developed with its member
companies, and using other published standards,
a set of standards for the enclosure
industry. NEMA has become the defacto standard
in the enclosure industry. Enclosures are
commonly called NEMA 1, NEMA 4, NEMA 12
etc While NEMA is indeed the standard in the
industry, it has no testing facilities, no
inspection systems, no label, or any enforcement
authority. Compliance to the standards is left
up to the individual manufacturers.
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Underwriters Laboratories Incorporated
Underwriters Laboratories is based in Northbrook,
Illinois. UL is also a world wide organization
and has agreements with many other standard
producing organizations. UL not only covers
enclosures, but almost every product you purchase
in the United States. UL has developed two sets
of standards for electrical enclosures.
Commonly refered to as UL-50 and UL-508. Most
enclosures are covered under UL-508. The UL
standards are very similar to NEMA. UL has
facilities to test enclosures to see if they
comply with their published standards. UL also
has field inspectors that regularly inspect
manufacturers that use the UL label to verify
that they do indeed comply with the standards
they have been tested to
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• Why so many Organizations ?

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There are as many standard producing
organizations as there are countries, more
actually. Over the years, each country, and in
many cases overseas, each province would create
an organization to develop standards for certain
products and processes. These organizations
have grown and taken on more responsibilities
each year and branched out. Each organization
would create its own set of standards, each
slightly different than the others until many
overlapped each others. Today, there is a
world-wide push to standardize, standards. With
the growing global market place, a company would
need to comply with hundreds of standards to sell
its product in various markets around the world.
Many of the standard organizations are now
consolidating their standards with others and
making agreements. Organizations like
the International Standards Organization (ISO)
are working to harmonize many of the worlds
standards.
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• What system does CEC use ?

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• Control Engineering Company

• All standard enclosures are built to JIC, NFPA
  and NEMA Standards.

• Many standard enclosures include a UL Rating
  Label.

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NEMA 1 UL TYPE 1

• Protection from contact with enclosed equipment
• Indoor use
• Limited protection against falling dirt
• Used where unusual service conditions do not exist

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NEMA 12 UL TYPE 12

• Intended for indoor use
• Protection against dirt, dust, fibers, and
  dripping non-corrosive liquids

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NEMA 3 UL TYPE 3

• Outdoor use
• Protection against windblown dust, rain and
  sleet.
• Undamaged by the formation of ice on the enclosure

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NEMA 4 UL Type 4

• Indoor and outdoor use
• Provides protection against falling rain,
  splashing water, and hose directed water
• Undamaged by the formation of ice

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NEMA 4X UL TYPE 4X

• Same as NEMA 4 UL TYPE 4
• Additional protection and resistance from
  corrosion